Scientific sessions and general questions

  1. When is the EGU General Assembly in 2023?

    The annual General Assembly, EGU23, will take place between 23 and 28 April 2023, in a hybrid format both in Vienna and online.

  2. What is the new format of EGU23?

    As before the pandemic, we are very excited to return to a format featuring three presentation styles, including poster, oral and PICO (Presenting Interactive COntent) presentations - which are composed of a short two minute presentation and a longer interactive discussion. One big change this year is that all types of presentation will have a virtually available form, allowing the EGU General Assembly to be more hybrid than ever before! We are looking forward to trialling this new format of the General Assembly with you and hearing your feedback about how it went and how we can improve.

    Find out more information about the three types of presentation here.

  3. Watch this short video that will give you an introduction to the various sessions at EGU23.

  4. How long will the medal and award lectures be, and how will they take place?

    Medal and award lectures will be held either in-person or online depending on the requirement of the medal/award recipients. The length of the lecture is specified in the EGU23 Programme. If you are a medal or award recipient and you have further questions about the format of your presentation, please email

  5. What about childcare at the meeting?

    Childcare at the General Assembly is a valued part of the EGU experience and something that we have provided for attendees for several years. The current childcare provision which offers free childcare spaces for children aged 1-12 years old is currently full, however you can find more information about childcare at the General Assembly here.

Health and safety

  1. Are there restrictions for entry for EGU23 as there were last year?

    No. The current health and safety guidelines for COVID-19, which are set by the Austrian Government, do not mandate entry restrictions for events. If you have any specific questions you can find out more information on the official Austrian Government webpage. Despite this, we do request all attendees monitor their own health and refrain from entering the conference centre in Vienna if you are unwell or have other symptoms such as cough, shortness of breath or fever.

  2. Will mask wearing be mandatory at EGU23?

    No, mask wearing will not be mandatory at EGU23, though we do recommend it. As with every other year, our absolute priority is the health and safety of participants. If you have any specific questions about COVID-19 health precautions, please visit the official Austrian Government website.


  1. How much are the registration fees?

    A full breakdown of the various options for registration fees for either on-site or virtual attendance at EGU23 is available here.

  2. When can I get a registration for EGU23?

    Registration for the meeting is available now! On-site and virtual registrations can be purchased up until the last day of the conference, 28 April 2023. Day tickets are also available during this time for on-site participation only. Check here for more information.

  3. What does the virtual registration fee entitle me to?

    Virtual registration provides you with full access to the virtual conference, as well as the complete digital experience, including supplementary material uploads for all abstracts, where you can comment on presentations before, during and after the meeting; several interactive EGU Short Courses; streaming and recordings of dozens of inspiring medal and award lectures; Great Debates and Union Symposia; a jobs & careers centre; and dedicated online and hybrid networking areas.

  4. If I have purchased an on-site single day ticket, can I access the virtual platform as well?

    Yes, your on-site ticket gives you full access to the virtual parts of the conference for the specified day, as described above.

  5. Do people who qualify for a EGU23 registration waiver still need to pay for an EGU membership?

    You do not need to be an EGU member to qualify for a fee waiver. This is taken into account during online registration. However, only EGU members can submit an abstract as first authors.

Supplementary materials, commenting, & licencing

  1. What are supplementary materials?

    They can be whatever you want! Prior to EGU23, the authors of each abstract will have 50 MB of space to upload whatever materials will most help them share their research with our community. This can be a graphic, a few slides, or an entire presentation; it just needs to be in a *.pdf, *.ppt/pptx, *.pps/ppsx, or *.png format and conform to EGU's current Code of Conduct. Additionally, you can upload a pre-recorded oral presentation (in *.mp4) format, which will be housed on Copernicus' Vimeo channel and linked to your abstract. The file upload for pre-recorded videos in *.mp4 format is limited to 200 MB.

    The supplementary materials will be available for viewing and commenting as soon as they are uploaded (available now) until 31 May 2023. Supplementary materials that have been submitted under the Creative Commons (CC BY 4.0) licence will subsequently be archived on EGUsphere.

  2. Can I opt out of the Creative Commons licence? Are my uploaded supplementary materials visible to everyone?

    Similar to abstracts, supplementary materials are distributed under the Creative Commons Attribution 4.0 License (CC BY 4.0), which allows anyone to share them as long as the authors are cited. If your supplementary materials require another licence, please select the respective licence in the upload tool and clearly indicate this in your file (e.g., © Authors. All rights reserved). In either case, authors grant Copernicus Meetings the right to store their supplementary materials online for viewing and download by registered meeting participants.

  3. Can supplementary materials be downloaded and used by viewers?

    Yes, according to the Creative Commons Attribution 4.0 License (CC BY 4.0), a registered user may download supplementary materials and share them as long as the authors are cited. If your materials require a different licence, please select the respective licence in the upload tool and clearly indicate this in your file (e.g., © Authors. All rights reserved).

  4. What is Open Science and what does it mean for protecting my ideas at EGU23 if I share them using a Creative Commons licence?

    Open Science refers to an 'open' and transparent approach to conducting scientific research, which includes sharing the products and processes of your research, from your raw data and code or tools you developed during your work, to the final publications at the end. Each abstract submitted to EGU23 will receive a DOI (Digital Object Identifier), the most common way to uniquely identify objects on the internet – particularly those shared under a Creative Commons licence, to make sure that it is properly attributed to the listed authors and therefore protect the researcher's ownership over them. More information is available here.

  5. Will the sharing of my presentation materials impact a future publication elsewhere?

    Submitting abstracts and presentation materials to EGU23 do not impact future publication. Journals usually encourage authors to discuss their work at conferences prior to submitting a manuscript, and most allow posting on a non-for-profit preprint server such as EGUsphere prior to submission. Examples of these policies can be found at all EGU journals, Nature, Science, and the AGU journals.

  6. What do you mean by 'commenting', and how will it work?

    Approval of commenting will be set as the default option for all abstract authors uploaded supplementary materials. Commenting is enabled for meeting participants logged in with their Copernicus user IDs, and their names are disclosed. This feedback option will be open from 4 April to 31 May 2023.


  1. I made a mistake entering my name/credit card/info for my invoice. How do I fix it?

    Please contact to correct any mistakes in your invoice details.

  2. I need help during the meeting!

    If you are in Vienna and your problem is urgent, please visit the EGU Information desk on the Yellow Level, or call +43 676 3199 583. If you are joining virtually, please email and mark you email URGENT.

    If your request is not urgent you can email and they will respond as soon as possible, or visit the EGU Information desk at your convenience. If you require help from EGU's Person of Trust, please email

    If you have any additional questions which have not been addressed here, or you need additional support, please email